Attempt to stabilize partition_prune test output.
Disable index-only scan for tests that might report variable results for "Heap Fetches" statistic due to concurrent transactions affecting whether all-visible flags can be set. Author: David Rowley Discussion: https://postgr.es/m/CAKJS1f_yjtHDJnDzx1uuR_3D7beDVAkNQfWJhRLA1gvPCzkAhg@mail.gmail.com
This commit is contained in:
Andrew Gierth
parent
49b0e300f7
commit
b47a86f500
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@ -1347,6 +1347,10 @@ create table ab_a3 partition of ab for values in(3) partition by list (b);
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create table ab_a3_b1 partition of ab_a3 for values in (1);
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create table ab_a3_b2 partition of ab_a3 for values in (2);
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create table ab_a3_b3 partition of ab_a3 for values in (3);
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-- Disallow index only scans as concurrent transactions may stop visibility
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-- bits being set causing "Heap Fetches" to be unstable in the EXPLAIN ANALYZE
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-- output.
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set enable_indexonlyscan = off;
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prepare ab_q1 (int, int, int) as
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select * from ab where a between $1 and $2 and b <= $3;
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-- Execute query 5 times to allow choose_custom_plan
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@ -1754,8 +1758,8 @@ execute ab_q6 (1, 2, 3);
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(1 row)
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explain (analyze, costs off, summary off, timing off) execute ab_q6 (0, 0, 1);
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------
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QUERY PLAN
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---------------------------------------------------------------------------------------------------
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Finalize Aggregate (actual rows=1 loops=1)
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-> Gather (actual rows=2 loops=1)
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Workers Planned: 1
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@ -1765,39 +1769,30 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (0, 0, 1);
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-> Parallel Seq Scan on lprt_a a (actual rows=51 loops=2)
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Filter: (a = ANY ('{0,0,1}'::integer[]))
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-> Append (actual rows=0 loops=102)
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-> Index Only Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b2_a_idx on ab_a1_b2 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b2_a_idx on ab_a1_b2 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b3_a_idx on ab_a1_b3 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b3_a_idx on ab_a1_b3 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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-> Index Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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-> Index Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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-> Index Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b1_a_idx on ab_a3_b1 (never executed)
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-> Index Scan using ab_a3_b1_a_idx on ab_a3_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b2_a_idx on ab_a3_b2 (never executed)
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-> Index Scan using ab_a3_b2_a_idx on ab_a3_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b3_a_idx on ab_a3_b3 (never executed)
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-> Index Scan using ab_a3_b3_a_idx on ab_a3_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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(36 rows)
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(27 rows)
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insert into lprt_a values(3),(3);
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explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 3);
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------
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QUERY PLAN
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---------------------------------------------------------------------------------------------------
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Finalize Aggregate (actual rows=1 loops=1)
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-> Gather (actual rows=2 loops=1)
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Workers Planned: 1
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@ -1807,38 +1802,29 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 3);
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-> Parallel Seq Scan on lprt_a a (actual rows=52 loops=2)
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Filter: (a = ANY ('{1,0,3}'::integer[]))
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-> Append (actual rows=0 loops=104)
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-> Index Only Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b2_a_idx on ab_a1_b2 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b2_a_idx on ab_a1_b2 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b3_a_idx on ab_a1_b3 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b3_a_idx on ab_a1_b3 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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-> Index Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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-> Index Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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-> Index Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b1_a_idx on ab_a3_b1 (actual rows=0 loops=2)
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-> Index Scan using ab_a3_b1_a_idx on ab_a3_b1 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b2_a_idx on ab_a3_b2 (actual rows=0 loops=2)
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-> Index Scan using ab_a3_b2_a_idx on ab_a3_b2 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b3_a_idx on ab_a3_b3 (actual rows=0 loops=2)
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-> Index Scan using ab_a3_b3_a_idx on ab_a3_b3 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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(36 rows)
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(27 rows)
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explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 0);
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------
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QUERY PLAN
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---------------------------------------------------------------------------------------------------
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Finalize Aggregate (actual rows=1 loops=1)
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-> Gather (actual rows=2 loops=1)
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Workers Planned: 1
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@ -1849,39 +1835,30 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 0);
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Filter: (a = ANY ('{1,0,0}'::integer[]))
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Rows Removed by Filter: 1
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-> Append (actual rows=0 loops=102)
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-> Index Only Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b2_a_idx on ab_a1_b2 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b2_a_idx on ab_a1_b2 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b3_a_idx on ab_a1_b3 (actual rows=0 loops=2)
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-> Index Scan using ab_a1_b3_a_idx on ab_a1_b3 (actual rows=0 loops=2)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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-> Index Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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-> Index Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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-> Index Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b1_a_idx on ab_a3_b1 (never executed)
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-> Index Scan using ab_a3_b1_a_idx on ab_a3_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b2_a_idx on ab_a3_b2 (never executed)
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-> Index Scan using ab_a3_b2_a_idx on ab_a3_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b3_a_idx on ab_a3_b3 (never executed)
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-> Index Scan using ab_a3_b3_a_idx on ab_a3_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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(37 rows)
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(28 rows)
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delete from lprt_a where a = 1;
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explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 0);
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QUERY PLAN
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-------------------------------------------------------------------------------------------------
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QUERY PLAN
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--------------------------------------------------------------------------------------------
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Finalize Aggregate (actual rows=1 loops=1)
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-> Gather (actual rows=2 loops=1)
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Workers Planned: 1
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@ -1892,34 +1869,25 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 0);
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Filter: (a = ANY ('{1,0,0}'::integer[]))
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Rows Removed by Filter: 1
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-> Append (actual rows=0 loops=100)
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-> Index Only Scan using ab_a1_b1_a_idx on ab_a1_b1 (never executed)
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-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b2_a_idx on ab_a1_b2 (never executed)
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-> Index Scan using ab_a1_b2_a_idx on ab_a1_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a1_b3_a_idx on ab_a1_b3 (never executed)
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-> Index Scan using ab_a1_b3_a_idx on ab_a1_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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-> Index Scan using ab_a2_b1_a_idx on ab_a2_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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-> Index Scan using ab_a2_b2_a_idx on ab_a2_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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-> Index Scan using ab_a2_b3_a_idx on ab_a2_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b1_a_idx on ab_a3_b1 (never executed)
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-> Index Scan using ab_a3_b1_a_idx on ab_a3_b1 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b2_a_idx on ab_a3_b2 (never executed)
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-> Index Scan using ab_a3_b2_a_idx on ab_a3_b2 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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-> Index Only Scan using ab_a3_b3_a_idx on ab_a3_b3 (never executed)
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-> Index Scan using ab_a3_b3_a_idx on ab_a3_b3 (never executed)
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Index Cond: (a = a.a)
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Heap Fetches: 0
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(37 rows)
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(28 rows)
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reset enable_hashjoin;
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reset enable_mergejoin;
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@ -2015,57 +1983,45 @@ set enable_hashjoin = off;
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set enable_mergejoin = off;
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explain (analyze, costs off, summary off, timing off)
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select * from tbl1 join tprt on tbl1.col1 > tprt.col1;
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QUERY PLAN
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-------------------------------------------------------------------------------
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QUERY PLAN
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--------------------------------------------------------------------------
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Nested Loop (actual rows=6 loops=1)
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-> Seq Scan on tbl1 (actual rows=2 loops=1)
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-> Append (actual rows=3 loops=2)
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-> Index Only Scan using tprt1_idx on tprt_1 (actual rows=2 loops=2)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 4
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-> Index Only Scan using tprt2_idx on tprt_2 (actual rows=2 loops=1)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 2
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-> Index Only Scan using tprt3_idx on tprt_3 (never executed)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt4_idx on tprt_4 (never executed)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt5_idx on tprt_5 (never executed)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt6_idx on tprt_6 (never executed)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 0
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(21 rows)
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-> Index Scan using tprt1_idx on tprt_1 (actual rows=2 loops=2)
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Index Cond: (tbl1.col1 > col1)
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-> Index Scan using tprt2_idx on tprt_2 (actual rows=2 loops=1)
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Index Cond: (tbl1.col1 > col1)
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-> Index Scan using tprt3_idx on tprt_3 (never executed)
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Index Cond: (tbl1.col1 > col1)
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-> Index Scan using tprt4_idx on tprt_4 (never executed)
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Index Cond: (tbl1.col1 > col1)
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-> Index Scan using tprt5_idx on tprt_5 (never executed)
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Index Cond: (tbl1.col1 > col1)
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-> Index Scan using tprt6_idx on tprt_6 (never executed)
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Index Cond: (tbl1.col1 > col1)
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(15 rows)
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explain (analyze, costs off, summary off, timing off)
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select * from tbl1 join tprt on tbl1.col1 = tprt.col1;
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QUERY PLAN
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-------------------------------------------------------------------------------
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QUERY PLAN
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--------------------------------------------------------------------------
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Nested Loop (actual rows=2 loops=1)
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-> Seq Scan on tbl1 (actual rows=2 loops=1)
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-> Append (actual rows=1 loops=2)
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-> Index Only Scan using tprt1_idx on tprt_1 (never executed)
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-> Index Scan using tprt1_idx on tprt_1 (never executed)
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Index Cond: (col1 = tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt2_idx on tprt_2 (actual rows=1 loops=2)
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-> Index Scan using tprt2_idx on tprt_2 (actual rows=1 loops=2)
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Index Cond: (col1 = tbl1.col1)
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Heap Fetches: 2
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-> Index Only Scan using tprt3_idx on tprt_3 (never executed)
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-> Index Scan using tprt3_idx on tprt_3 (never executed)
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Index Cond: (col1 = tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt4_idx on tprt_4 (never executed)
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-> Index Scan using tprt4_idx on tprt_4 (never executed)
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Index Cond: (col1 = tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt5_idx on tprt_5 (never executed)
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-> Index Scan using tprt5_idx on tprt_5 (never executed)
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Index Cond: (col1 = tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt6_idx on tprt_6 (never executed)
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-> Index Scan using tprt6_idx on tprt_6 (never executed)
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Index Cond: (col1 = tbl1.col1)
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Heap Fetches: 0
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(21 rows)
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(15 rows)
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select tbl1.col1, tprt.col1 from tbl1
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inner join tprt on tbl1.col1 > tprt.col1
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@ -2093,57 +2049,45 @@ order by tbl1.col1, tprt.col1;
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insert into tbl1 values (1001), (1010), (1011);
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explain (analyze, costs off, summary off, timing off)
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select * from tbl1 inner join tprt on tbl1.col1 > tprt.col1;
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QUERY PLAN
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-------------------------------------------------------------------------------
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QUERY PLAN
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--------------------------------------------------------------------------
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Nested Loop (actual rows=23 loops=1)
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-> Seq Scan on tbl1 (actual rows=5 loops=1)
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-> Append (actual rows=5 loops=5)
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-> Index Only Scan using tprt1_idx on tprt_1 (actual rows=2 loops=5)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 10
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-> Index Only Scan using tprt2_idx on tprt_2 (actual rows=3 loops=4)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 11
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-> Index Only Scan using tprt3_idx on tprt_3 (actual rows=1 loops=2)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 2
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-> Index Only Scan using tprt4_idx on tprt_4 (never executed)
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Index Cond: (col1 < tbl1.col1)
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Heap Fetches: 0
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-> Index Only Scan using tprt5_idx on tprt_5 (never executed)
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Index Cond: (col1 < tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt6_idx on tprt_6 (never executed)
|
||||
Index Cond: (col1 < tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
(21 rows)
|
||||
-> Index Scan using tprt1_idx on tprt_1 (actual rows=2 loops=5)
|
||||
Index Cond: (tbl1.col1 > col1)
|
||||
-> Index Scan using tprt2_idx on tprt_2 (actual rows=3 loops=4)
|
||||
Index Cond: (tbl1.col1 > col1)
|
||||
-> Index Scan using tprt3_idx on tprt_3 (actual rows=1 loops=2)
|
||||
Index Cond: (tbl1.col1 > col1)
|
||||
-> Index Scan using tprt4_idx on tprt_4 (never executed)
|
||||
Index Cond: (tbl1.col1 > col1)
|
||||
-> Index Scan using tprt5_idx on tprt_5 (never executed)
|
||||
Index Cond: (tbl1.col1 > col1)
|
||||
-> Index Scan using tprt6_idx on tprt_6 (never executed)
|
||||
Index Cond: (tbl1.col1 > col1)
|
||||
(15 rows)
|
||||
|
||||
explain (analyze, costs off, summary off, timing off)
|
||||
select * from tbl1 inner join tprt on tbl1.col1 = tprt.col1;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------
|
||||
Nested Loop (actual rows=3 loops=1)
|
||||
-> Seq Scan on tbl1 (actual rows=5 loops=1)
|
||||
-> Append (actual rows=1 loops=5)
|
||||
-> Index Only Scan using tprt1_idx on tprt_1 (never executed)
|
||||
-> Index Scan using tprt1_idx on tprt_1 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt2_idx on tprt_2 (actual rows=1 loops=2)
|
||||
-> Index Scan using tprt2_idx on tprt_2 (actual rows=1 loops=2)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 2
|
||||
-> Index Only Scan using tprt3_idx on tprt_3 (actual rows=0 loops=3)
|
||||
-> Index Scan using tprt3_idx on tprt_3 (actual rows=0 loops=3)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 1
|
||||
-> Index Only Scan using tprt4_idx on tprt_4 (never executed)
|
||||
-> Index Scan using tprt4_idx on tprt_4 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt5_idx on tprt_5 (never executed)
|
||||
-> Index Scan using tprt5_idx on tprt_5 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt6_idx on tprt_6 (never executed)
|
||||
-> Index Scan using tprt6_idx on tprt_6 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
(21 rows)
|
||||
(15 rows)
|
||||
|
||||
select tbl1.col1, tprt.col1 from tbl1
|
||||
inner join tprt on tbl1.col1 > tprt.col1
|
||||
|
|
@ -2190,30 +2134,24 @@ delete from tbl1;
|
|||
insert into tbl1 values (4400);
|
||||
explain (analyze, costs off, summary off, timing off)
|
||||
select * from tbl1 join tprt on tbl1.col1 < tprt.col1;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------
|
||||
Nested Loop (actual rows=1 loops=1)
|
||||
-> Seq Scan on tbl1 (actual rows=1 loops=1)
|
||||
-> Append (actual rows=1 loops=1)
|
||||
-> Index Only Scan using tprt1_idx on tprt_1 (never executed)
|
||||
Index Cond: (col1 > tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt2_idx on tprt_2 (never executed)
|
||||
Index Cond: (col1 > tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt3_idx on tprt_3 (never executed)
|
||||
Index Cond: (col1 > tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt4_idx on tprt_4 (never executed)
|
||||
Index Cond: (col1 > tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt5_idx on tprt_5 (never executed)
|
||||
Index Cond: (col1 > tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt6_idx on tprt_6 (actual rows=1 loops=1)
|
||||
Index Cond: (col1 > tbl1.col1)
|
||||
Heap Fetches: 1
|
||||
(21 rows)
|
||||
-> Index Scan using tprt1_idx on tprt_1 (never executed)
|
||||
Index Cond: (tbl1.col1 < col1)
|
||||
-> Index Scan using tprt2_idx on tprt_2 (never executed)
|
||||
Index Cond: (tbl1.col1 < col1)
|
||||
-> Index Scan using tprt3_idx on tprt_3 (never executed)
|
||||
Index Cond: (tbl1.col1 < col1)
|
||||
-> Index Scan using tprt4_idx on tprt_4 (never executed)
|
||||
Index Cond: (tbl1.col1 < col1)
|
||||
-> Index Scan using tprt5_idx on tprt_5 (never executed)
|
||||
Index Cond: (tbl1.col1 < col1)
|
||||
-> Index Scan using tprt6_idx on tprt_6 (actual rows=1 loops=1)
|
||||
Index Cond: (tbl1.col1 < col1)
|
||||
(15 rows)
|
||||
|
||||
select tbl1.col1, tprt.col1 from tbl1
|
||||
inner join tprt on tbl1.col1 < tprt.col1
|
||||
|
|
@ -2228,30 +2166,24 @@ delete from tbl1;
|
|||
insert into tbl1 values (10000);
|
||||
explain (analyze, costs off, summary off, timing off)
|
||||
select * from tbl1 join tprt on tbl1.col1 = tprt.col1;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------
|
||||
Nested Loop (actual rows=0 loops=1)
|
||||
-> Seq Scan on tbl1 (actual rows=1 loops=1)
|
||||
-> Append (actual rows=0 loops=1)
|
||||
-> Index Only Scan using tprt1_idx on tprt_1 (never executed)
|
||||
-> Index Scan using tprt1_idx on tprt_1 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt2_idx on tprt_2 (never executed)
|
||||
-> Index Scan using tprt2_idx on tprt_2 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt3_idx on tprt_3 (never executed)
|
||||
-> Index Scan using tprt3_idx on tprt_3 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt4_idx on tprt_4 (never executed)
|
||||
-> Index Scan using tprt4_idx on tprt_4 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt5_idx on tprt_5 (never executed)
|
||||
-> Index Scan using tprt5_idx on tprt_5 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
-> Index Only Scan using tprt6_idx on tprt_6 (never executed)
|
||||
-> Index Scan using tprt6_idx on tprt_6 (never executed)
|
||||
Index Cond: (col1 = tbl1.col1)
|
||||
Heap Fetches: 0
|
||||
(21 rows)
|
||||
(15 rows)
|
||||
|
||||
select tbl1.col1, tprt.col1 from tbl1
|
||||
inner join tprt on tbl1.col1 = tprt.col1
|
||||
|
|
@ -2466,3 +2398,4 @@ select * from boolp where a = (select value from boolvalues where not value);
|
|||
(9 rows)
|
||||
|
||||
drop table boolp;
|
||||
reset enable_indexonlyscan;
|
||||
|
|
|
|||
|
|
@ -256,6 +256,11 @@ create table ab_a3_b1 partition of ab_a3 for values in (1);
|
|||
create table ab_a3_b2 partition of ab_a3 for values in (2);
|
||||
create table ab_a3_b3 partition of ab_a3 for values in (3);
|
||||
|
||||
-- Disallow index only scans as concurrent transactions may stop visibility
|
||||
-- bits being set causing "Heap Fetches" to be unstable in the EXPLAIN ANALYZE
|
||||
-- output.
|
||||
set enable_indexonlyscan = off;
|
||||
|
||||
prepare ab_q1 (int, int, int) as
|
||||
select * from ab where a between $1 and $2 and b <= $3;
|
||||
|
||||
|
|
@ -581,3 +586,5 @@ explain (analyze, costs off, summary off, timing off)
|
|||
select * from boolp where a = (select value from boolvalues where not value);
|
||||
|
||||
drop table boolp;
|
||||
|
||||
reset enable_indexonlyscan;
|
||||
Loading…
Reference in New Issue